Heat strains cars as Vorarlberg breakdown calls reach 2,100

The Vorarlberg breakdown service of the Austrian Automobile, Motorcycle and Touring Club (ÖAMTC) responded to 2,100 call-outs in July, ORF reports. Nearly half involved empty batteries, engine problems or tyre failures, which are common during periods of high heat.

Automobile clubs provide up to 20 percent more breakdown assistance during hot weather. “High temperatures put considerable strain on batteries and make them age faster,” said Stephan Fritz, a vehicle technology expert at ÖAMTC Vorarlberg.

Traditional lead starter batteries perform best at an ambient temperature of about 25 degrees Celsius, while temperatures in the engine compartment can reach 60 to 80 degrees. Any damage to a battery is likely to become apparent by winter at the latest, Fritz said.

Heat can also cause engines to overheat. Leaking cooling systems or insufficient coolant can quickly lead to engine damage in summer. Fritz advised drivers to check the coolant regularly and inspect the oil level at the same time.

Very hot asphalt places additional stress on tyres because high temperatures can increase tyre pressure and make blowouts more likely. Drivers should check tyres for visible damage, wear and age, and regularly ensure that the pressure is correct.

Warning over winter tyres

ÖAMTC is also observing that many drivers are still using winter tyres whose tread is too shallow for the coming season. Winter tyres are not prohibited in summer, but using them can compromise safety, Fritz warned.

The rubber compound in winter tyres is not suited to summer conditions. This increases wear and, above all, significantly lengthens braking distances, he said.

Using the air conditioning efficiently

After 15 minutes in direct sunlight, the air inside a car can exceed 45 degrees Celsius. Opening the windows slightly does little to help because the air can barely circulate. Dashboards and seats can heat up to 80 degrees.

ÖAMTC recommends opening all doors and windows before setting off so that the trapped heat can escape quickly. Drivers should then start the engine, set the air conditioning to its lowest temperature and turn the fan up fully. Once cool air begins to flow, they should close the windows and switch on the recirculation function.

After a few minutes of driving, the recirculation function should be switched off and the temperature adjusted. This helps maintain good air quality inside the car.